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zynq::flash: implement stopping LinearAddressing mode

This commit is contained in:
Astro 2019-11-29 23:48:08 +01:00
parent a8a7f11990
commit dd3ad3be67
1 changed files with 23 additions and 4 deletions

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@ -19,6 +19,15 @@ pub struct Flash<MODE> {
_mode: PhantomData<MODE>, _mode: PhantomData<MODE>,
} }
impl<MODE> Flash<MODE> {
fn transition<TO>(self) -> Flash<TO> {
Flash {
regs: self.regs,
_mode: PhantomData,
}
}
}
impl Flash<()> { impl Flash<()> {
pub fn new(clock: u32) -> Self { pub fn new(clock: u32) -> Self {
Self::enable_clocks(clock); Self::enable_clocks(clock);
@ -185,15 +194,25 @@ impl Flash<()> {
self.regs.enable.modify(|_, w| w.spi_en(true)); self.regs.enable.modify(|_, w| w.spi_en(true));
Flash { self.transition()
regs: self.regs,
_mode: PhantomData,
}
} }
} }
impl Flash<LinearAddressing> { impl Flash<LinearAddressing> {
/// Stop linear addressing mode
pub fn stop(self) -> Flash<()> {
self.regs.enable.modify(|_, w| w.spi_en(false));
// De-assert chip select.
self.regs.config.modify(|_, w| w.pcs(true));
self.transition()
}
pub fn ptr<T>(&mut self) -> *mut T { pub fn ptr<T>(&mut self) -> *mut T {
0xFC00_0000 as *mut _ 0xFC00_0000 as *mut _
} }
pub fn size(&self) -> usize {
32 * 1024 * 1024
}
} }